Replacement VoTech DuoToV 90/838 (7.20) Natural Gas Coalescing Filter Element

The Meitong Replacement VoTech DuoToV 90/838 (Code 7.20) Coalescing Filter Element is designed for the efficient removal of solid particles, liquid aerosols, and condensates from natural gas and other industrial gas streams.

Featuring an integrated multilayer pleated pre-filter and high-efficiency fiberglass coalescing media, this filter element combines particle filtration and liquid separation in a single cartridge. The pleated pre-filter captures solid contaminants before they reach the coalescing layer, helping to reduce premature clogging, maintain a low differential pressure, and extend filter service life. The coalescing media captures fine liquid droplets, allowing them to merge into larger droplets for subsequent separation by gravity within the filter separator vessel.

Manufactured by Meitong Filtration as an aftermarket replacement for the VoTech DuoToV 90/838, this element provides a cost-effective filtration solution for natural gas processing, transmission, and industrial gas applications.

Working principle

The droplets of oil, water and other liquids are captured by fibers inside the coalescer. These micron sized fibers form a tortuous channel for the air flow, forcing the solid particles and liquid droplets to be captured by fibers under the action of three filtering mechanisms of inertial collision, diffusion interception and direct interception. The liquid surface tension makes the small droplets coalesce into larger droplets, and the large droplets settle to the bottom of the container due to gravity.